Note: Ingredients listed on restricted chemical lists
EC/CAS
1344-09-8
Name of the chemical
Silicic acid, sodium salt
Concentration
30-50%
General Information
Revision date
2026-01-01
Product name
Liquid Boiler Stop-Leak
1.2.1 Relevant identified uses
Makes strong repairs on cracked steam or hot water heating boilers
Manufacturer Name
For any Transportation or Medical Chemical Emergencies call
Icons in SDS
Company Information
company name
Black Swan Mfg. Co
e-mail address of the competent person responsible for the Safety Data Sheet
info@blackswanmfg.com
GHS Information
Signal word
Warning
Hazard Codes
Hazard statements (CLP)
H303, H315, H320
Hazard statements
Code
Statements
H303
May be harmful if swallowed
Section 2
SECTION 2: Hazards identification
Labels NFPA GHS Classification None HEALTH HAZARD FIRE HAZARD Health Environmental 4 – Deadly Flash Points Extreme Danger 2 – Hazardous – Below 73°F – Below 100°F Acute Toxicity:Not Established Slight Hazardous 0 Signal Word 0 - Normal Material 0 0 None – Above 100°F, Not Skin Irritation: Not Established Acute Aquatic Toxicity: Not Established exceeding 200°F – Above 200°F Eye Irritation: Not Established Chronic Aquatic Toxicity: Not Established – Will not burn Skin Sensitization: NO SPECIFIC HAZARD REACTIVITY HMIS Oxidizer OX 4 – May detonate Acid ACID 3 – Shock and heat Alkali ALK may detonate Physical HEALTH 0 Corrosive COR 2 – Violent chemical None Use NO WATER W change Radioactive 1 – Unstable if heated FLAMMABILITY 0 0 – Stable Hazardous Statements Precautionary Statements REACTIVITY H303: May be harmful if P102: Keep out of reach of children swallowed P264: Wash thoroughly after handling H315: Causes skin irritation P280: Wear protective gloves/protective H320: Causes eye irritation clothing/eye protection –
2.1 Classification of the substance or mixture
None HEALTH HAZARD FIRE HAZARD 4 – Deadly Flash Points 3 - Extreme Danger 4 – Below 73°F Health Environmental 2 – Hazardous 3 – Below 100°F Acute Toxicity:Not Established 1 - Slight Hazardous 2 – Above 100°F, Not Signal Word 0 - Normal Material 0 1 – Above 200°F exceeding 200°F Skin Irritation: Not Established Acute Aquatic Toxicity: Not Established Eye Irritation: Not Established Chronic Aquatic Toxicity: Not Established None 0 – Will not burn 0 0 Skin Sensitization: NO SPECIFIC HAZARD REACTIVITY HMIS Acid ACID 3 – Shock and heat Oxidizer OX 4 – May detonate Alkali ALK may detonate Corrosive COR HEALTH 2 – Violent chemical 0 Use NO WATER W Physical change None Radioactive 1 – Unstable if heated FLAMMABILITY 0 0 – Stable
